All in all I think these crave devices are awesome, and the variety of flavors is amazing. I do however have an issue with certain flavors (the flavor recently shipped to me is the most affected this way) where the flavor diminishes quickly about 1/3 to 1/2 way through the full capacity of the device and will start to get a gnarly taste to it. often times so bad that I have to stop using the affected devices because the taste gets so bad. Its like something got heated too much and burned and affects the flavor after it happens. Other flavors don't seem to do this although the flavor of those ones isn't as strong near the end as it is in the beginning. So I do find this disappointing and may need to find an alternative to Crave devices.